Ajax和javascript之间混淆 [英] Confused between ajax and javascript

问题描述

我在编码一个简单的输入文本框时感到困惑，因为输入框
邮政编码，然后显示带有其地图API的Google地图.

我起初以ajax为初衷，但是当我这样做的时候，我发现了
我最终得到了一个javascript函数，该函数接受了表单中的邮政编码.
该功能只是从邮政编码输入中初始化map元素，我可以在其中将其显示在页面上.

我的文本框中有一个onkeyup参数，该参数调用如下函数:

Hi,

I am getting kind of confused as I was coding a simple input text box that takes in
a zip code, which then displays a google map with its map api.

I initially started out with ajax in mind, but as i was doing it, I found
that i ended up with a javascript function that takes in the zip code from my form.
The function just initializes the map element from the zip code input, where I can just display it on the page.

My text box has an onkeyup parameter that calls the function as below:

function initialize(str) {
  if (GBrowserIsCompatible()) {
    var map = new GMap2(document.getElementById("map_canvas"));

    var geocoder = new GClientGeocoder();
    geocoder.setBaseCountryCode("us");

    geocoder.getLatLng(
      str,
      function(point) {
        if (point) {
          map.setCenter(point, 13);
          var marker = new GMarker(point);
          map.addOverlay(marker);
        }
      }
    );
  }
}

我的概念可能不那么强，所以这个document.getElementById部分是什么?那是JavaScript吗?

那么，为什么我们需要ajax?对于不支持javascript的情况?
感到困惑.


Brian

I''m probably not that strong in my concepts, so what''s this document.getElementById part? Is that a javascript thing?

So why do we need ajax then? For cases where javascript is not supported?
Confused.


Brian

推荐答案

document.getElementById是JavaScript.如果您希望在不离开该页面的情况下访问页面上的服务调用(不回发)，则使用Ajax.该ajax(服务器端编码)调用仍由javascript(客户端编码)处理.

http://www.webdeveloper.com/forum/archive/index.php/t- 178422.html [ ^ ]

The document.getElementById is a javascript. Ajax is used if you want a service call accessed on your page without leaving that page (no-postback). That ajax (server side coding) call is still handled by javascript(client side coding).

http://www.webdeveloper.com/forum/archive/index.php/t-178422.html[^]

document.getElementById是Java语言.

AJAX是使用Javascript从客户端与服务器进行通信的一种方式.


要了解有关AJAX及其用法的更多信息，请看这里: AJAX Tutporial [此处. [

document.getElementById is a Javascript thing.

AJAX is a way to communicate with server from client using Javascript.


To read more on AJAX and how it is used, look here: AJAX tutporial[^]
More details here.[^]

尝试此链接

单击此处 [

try this Link

Clickhere[^]

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